Matei Zaharia created SPARK-3933:
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Summary: Optimize decimal type in Spark SQL for those with small
precision
Key: SPARK-3933
URL: https://issues.apache.org/jira/browse/SPARK-3933
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Matei Zaharia
Assignee: Matei Zaharia
With fixed-precision decimals, many decimal values will fit in a Long, so we
can use a Decimal class with a mutable Long field to represent the unscaled
value, rather than allocating a BigDecimal. We can then do some operations
directly on these Long fields.
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